The subject of this thread is about headroom, calibration of the studio monitoring, reference levels, the utilization of the available data width on the digital recording medium, and how to achieve the optimal dynamics for the particular medium. In this sense there preexist several standards in recording technology, e.g maximum level for films, total dynamic ranges for the different media etc..
This thread is not about composing, and not about how the composer handles dynamics and loudness relations between instruments, or groups of instruments within his composition.
The recording of a real orchestra is another art form. However, I think it is possible to transfer parameters from the reality of recording a real orchestra into the virtual reality of computer generated orchestra music, for example room and distance parameters, but then everything has to be programmed.